Interlocking joint for steel construction



Sept. 1929- c. CARMICHAEL 1,728,782

' INVENTOR 4 J Mar/eg /a/mzZ/me/ 2241/4/10 L4 t W 1. MM ATTORNEY WITNESSES Patented Sept. 17, 1929 CHARLES cARMIoHAELQon INTERLOCKING JOINT roia'srniinoo vstmuorionf Application filed June 4, 1928. Serial No. 282,748.

This invention relates to interlocking joints for steel construction and has more particularly to do with joints for columns and girders in connection with building 5 frame structures and for any other analogous purpose.

The object of the invention is to dispense altogether with the necessity for the use of rivets, particularly at the place where the building is being constructed, thus doing away with the noise, inconvenience and handling of hot rivets.

A further object is to provide a joint of this character which enables all parts to be interlocked and securely welded so that the structure becomes an integral one.

A further object is to provide a jointof this character which facilitates the joining of columns and girders and other frame sec- 2 tions at an angle to each other so that the work can be more rapidly done than is possible under existing conditions.

lVith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts which will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings- Figure 1 is a view partly in elevation and partly in section illustrating my improved joint or joints connecting sections of column and connecting girders to the column;

Figure 2 is a top plan view of Figure 1;

Figure 3 is a view in side elevation of Figure 1 looking at the end of said figure;

Figure 4 is a view in side elevation in the lower end of a column section.

While of course my invention is adapted for use as a joint or coupling means for connecting beams of any sort at right angles to each other I shall for convenience of description refer to the different typesof beams as columns, indicating vertical beams, and girders, indicating horizontal beams.

The beams are preferably of I-form and in carrying out my invention I employ vertical or column sections A and horizontal or girder sections B. The column sections A at their upper ends have plates 2 secured to e do 1 helower ends of the'column sections opposite sides thereof by welding ior by any a other improved means. These I plates 2 have atzthelr side edges recesses 8 wh1ch are enlarged at thelr inner ends. I

A and both 'QIlClSrOfthG girder sections B have UNITED STATES keys or tongues:welded'or oth'erwise]secured thereto and of a shape 'and'siie tofit within therecessesB and be anchored in said recesses so as to prevent removal from'said recesses eXceptby lateral movement." In other words, the tongues or keys f Jshaveenlarged innerends fitting in'the enlarged inner ends of the recesses 3so that they cannot be drawn out of the recesses by.longitudinalmovement of the girdersor beamsand when in position are securely welded, as will be moreirfully hereinafter explained; h I

v1 preferably secure angles the. J op posite .sides of-the column sections A at'the upper ends oflithe latter, and employ bolts 8 and nuts 9 for this-purpose. These angles 5, 5. have their vertical members projecting above the upper ends of the .column sections so that 5 they. can, receive between; them ithe web' of the. continuing section above, and a bolt @may' be projected; through ;alined open-z ingsx7 in the anglesgandin-the -icolumn sec-j tions respectively to temporarily hold: ithem when assembled. j I a 1: The horizontal portions of the angles 5 also have openings 7 therein and'the web. portions of the girders B may rest upon these horizon; tal portions of the angles andbe'securedprefk erably bybolts; I have shown-arbolt8 with a;nut.9 thereon connecting one of'the girders" B (Figure 1) and itis of course to be finders. stood that similar boltswill be employed to connect'all 0f the girder sections and the column sections to the angles when they are assembled.

After assemblage the meeting faces of the angles and beams as well as the edges of the A tongues 4 with the walls of the recesses 3 are A 951' sembled. It is simply necessary to place the column sections. and girders onthe angles or between the angles and then givethema slight lateral movement in order to position the tongues 4: in the recesses 3. The parts then can be bolted so as to hold them together until the parts can be securely Welded.

While 1 have illustrated one embodiment of my invention it is to be distinctly understood that varicose-hangers and alterations might be made in the general form ofsthe parts described Without departing from my inven: tion and hence I do notlimit myself to the precise details set forth but consider myself at liberty to make suchehanges andalterations as fairly fall within the spirit and scope of the appended claims. I claim: I

1. A joint for steel frame construction, 1ncludingcolumn seetionsand girder sections, plates'sec-ured to oppositesides of the column sections at one end and having recesses there- 7 2b in extending inwardly from the edgesthereof'and largest at their inner ends, and tongues on oneend "of GflCl'llCO'llllllIl section and on both ends of thegirder sectionsfittinginthe recesses .oftheplates and adapted to be Welded therein.

2:;A joint for steelframe construction, including :columnsections and girder sections, plates secured to oppositesides of thecolumn seetionsat one'end and having recesses therein extending; inwardly from the edges thereof and largest at their innerends, and tongues on :one-;end of eachv column 1 section and on both ends of the girder sections fitting in the recesses of the 'plate s and adapted to be Welded 35 therein, said ton'gues and recesses having enlarged inner ends whereby the tongues are anchoredrin theirecesses.

joint ofthe character described, ineluding a column section, plates secured to 0p- 40 posite sides ofsthescolumn section and having reeessesxin theirt'upper, andside edges, angles secured to. the; upper end of the column seetionyan. UPPGIBOlIlIIlIlrSGGtlOIl adapted to be positioned between .said angles, girder sections adapted to be supported.on-saidangles, and-tongues onLthe lower-end ofthe=column section: and onthe ends ofthe girder-section fittingin-theirecesses-of the plates and all of said parts Welded together,

Signed at NeW-York,;in the county of New York, and State of New York, this .Znd'day of June, A11]. 1928. 7 g

' .GHARLESCARMIGHAEL. 

